James habbis bogebs



J. H. ROGERS. E1e0tri0-Light.

Patented June 24,1879.

' Invenivr:

NVPETERS FHOTO LTHOCYAPAER WASHHGTOl u c UNITED STATES PATENT OFFICE.

JAMES HARRIS ROGERS, OF WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVEMENT IN ELECTRIC LIGHTS.

Specification forming part of Letters Patent No. 216,760, dated une 24,1879; application filed December 27, 1878.

To all whom it may concern:

Be it known that I, J. HARRIS RoenRs, of Washington city in the Districtof Columbia have invented a new and useful Improvement in the ElectricLight, of which the following is a specification.

My lllYGllhlOll consists in the combination of a Ituhmkorli coil orother electrical instrument giving a current of high tension withelectrodes properly disposed for receiving the electric arc, andfurnished with ordinary ap pliances to produce it.

The object of my invention is to establish the said are withoutconnecting, and then separating the electrodes or otherwise breaking thecircuitatter closing it to establish the arc, and also to reestablishthe are when extinguished, or about to be extinguished, so quickly thatit will but seldom it ever, go out, and doing this either automaticallyor by volition of an ope a ter. The drawings herewith filed show howthese results may be effected by suitable instruments and electriccircuits, similar letters of reference indicating like parts.

Figure 1 represents one wayin which I propose to use Ruhmkorff coil orother instrument giving a current of high tension to establish theelectric arc, and also to re-establish automatically as often as it maybe partially extinguished or go out. In this figure, B is an electricbattery or a dynamo-electric machine. I) is a section of the same. It

is a Ruhmkorii' coil or other instrument giving an electric current ofhigh tension c and c, electrodes. The line leading from poles of I)represent the conductors for a primary currentacting on P.

The lines leading from R and terminating in arrow-heads represent theconductors of secondary current from It, and the lines which connect theopposite poles of 13 represent the conductors leading to the twoelectrodes 0 e.

Thepoles of I), being suitably connected with B, (B being suitablyrelated by circuits aforesaid to c c,) will, in sending its inducedcurrent through them, tear off the particles of c or c sufficiently toform a conductor, aided by the rarefied or heated atmosphere, for thecurrents from B to pass and establish the electric arc, and will alsoreestablish the are as required if it becomes partially extinguished orgoes out.

It is manifestly in the same line of thought, though not so edective, toapply the Bulimkorff coil or currents of high tension as above byvolition instead of doing so automatically. It is also manifest that 2')might be dispensed with as a section of B if another battery weresuitably applied to It to effect what 1) accomplishes herein.

Having thus described my invention, what I claim as new, and ask LettersPatent for, 1s

The secondary current of a Ruhmkorli' coil, with or without condenser,for establishing and re-establishing the electric are or light when saidare or light proceeds from adynamo-electric machine or voltaic battery,substantially as and for the purpose herein set forth and described.

JAS. HARRIS ROGERS.

Witnesses D. P. Lown, J. W. RoenRs.

